Fuel pump



y 1939- J. WILLIAMS 2,166,618

FUEL PUMP Filed May 18, 1938 2 Sheets-Sheet 1 0 2 an n cZWiZZiamsmvENroR ATTO R N EYS y G. J. WILLIAMS 2,166,518

FUEL PUMP Filed may 1a, 1938 2 Sheets-Sheet 2 ATTO RN EYS Patented July18, 1939 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to improvements in fuel pumps and more particularlyto that type equipped with mechanism for denoting the quantity andindicating the price of liquid dispensed therefrom.

One of the principal objects of my invention is to provide meansincorporated within a fuel pump for resetting the calculating mechanismwhich denotes the quantity and/or indicates the price of the liquiddispensed from the pump.

Another object of my invention is to provide a device of the abovedescribed character wherein the resetting means is operable foroperating the switch mechanism for controlling the operation of thepump.

A further object of my invention is to provide a device of the abovedescribed character which is simple in construction, efficient inoperation, durable in use and economical in manufacture.

Other objects and advantages will be apparent from the followingdescription, appended claims and annexed drawings.

Referring to the drawings wherein like reference characters designatelike parts throughout the several views:

Figure l is a front elevation of a fuel pump illustrating my inventionincorporated therein.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a view similar to Figure 1 showing the parts in anotherposition.

Figures 4 and 5 are sectional views taken on the lines 4-4 and 55 ofFigure 3 respectively.

In practicing my invention I employ a fuel pump 5 of typicalconstruction and which is ordinarily used in dispensing gasoline or thelike for use in motor vehicles. A typical form of said pump asillustrated in the drawings comprises a housing 6 having secured to thebottom thereof an electric motor I connected to a pump 8 by means of apulley and belt assembly 9. Said pump is connected to a fuel intake lineIn and to a fuel discharge line I I. Said fuel discharge line ll hasinterposed therein a drive mechanism of ordinary construction housedwithin a casing l2. The drive mechanism is connected by means of a shaftl3 to a calculating mechanism. provided with indicia wheels l4 havingindicia thereon visible through windows IS in a housing 16. Saidcalculating mechanism functions to denote the quantity and the price ofgasoline dispensed through a hose connection ll connected to the outerend of the line H, the same being of ordinary construction.

The calculating mechanism is also provided with the usual shaft I8 forresetting the indicia wheels after a predetermined amount of the fuelhas been dispensed from the pump. The outer end of the shaft 18 hasfixed thereto a gear 19 in mesh with a gear 20 fixed on a shaft 2| onwhich is mounted a ratchet gear 22 for a purpose hereinafter described.

My reset mechanism, in the preferred embodiment illustrated in thedrawings, comprises a bracket 25 secured to the bottom of the housing 6and on the upper end of which is pivoted a substantial horizontallyextending arm 26, one end of said arm being connected to and under theinfluence of a coil spring 21 connected to the bottom of the housing 6.A stop member 26 is secured to one of the Walls of the housing andserves to limit the downward movement of the end of the arm 26 to whichthe spring 21 is connected. The opposite end of the arm 26 has journaledtherein a crank arm 29, one end of which is fixed to a disk 30 and theopposite end pivoted to the lower end of a connecting rod 3|. The upperend of the connecting rod 3! is pivotally connected to a yoke arm 32,one end of which is pivoted to the housing as at 33 and the opposite orfree end 33a adapted to normally overlie and engage the upper face of abumper 34, preferably constructed of rubber, mounted on the upper end ofa support 35 secured to the bottom of the housing.

interposed between the bottom of the housing and the calculatingmechanism is a horizontally extending shelf 36 on which is mounted amotor switch 31 equipped with a switch arm 38 having pivoted thereto thelower end of a connecting rod 39 for operating said switch and therebyeffecting operation of the motor 1 through an electrical circuit (notshown). Operation of said motor serves to operate the pump 8 through themedium of the pulley and belt assembly 9 heretofore described.

One side of the housing 6 is provided with a bearing 40 in which isjournaled a shaft 4| extending into the housing and the outer end ofsaid shaft is equipped with a handle 42 for a purpose hereinafter setforth. Pinned on the inner end of the shaft 4| and movable therewith isan arm 43, one end of which is connected to the upper end of the rod 39and the opposite end connected by means of a link 44 to a bell cranklever 45 pivoted to the housing 6. Subjacent the bell crank lever 45there is provided a sliding bolt 46 having an inclined face 41 andfashioned with a projection 48 for engagement with the lower end of thebell crank lever 45 and said bolt is slidably carried in guides 49secured to the housing.

A coil spring 50 embraces said bolt, one end of which engages one of theguides 49 and the other end the projection 48 to normally urge said boltin a direction away from the rod 39.

The housing 6 is also provided with a pair of laterally extending spacedguide members 5| through which is slidably mounted a verticallyextending bar 52 having an upper pivoted section 53.

Above and adjacent the lower guide member 5! said bar is fashioned witha projection 54 having an inclined face for engagement with the inclinedface 41 of the bolt 46. member 5! the bar is equipped with a coil spring55, the upper end of which engages the lower guide member 5| and thelower end a collar 55 secured on the lower end of the bar 52. The spring55 serves to normally urge the bar towards the bottom of the housing 6and the lower end of the bar into engagement with the free end 33a ofthe yoke arm 32 when the pump is in operative position as hereinafterset forth.

The upper end of the section 53 of the bar 52 has pivoted thereto an arm51 rotatably mounted on the shaft 2!. Said arm 51 has pivotally mountedthereon a gravity actuated dog 58, said dog being adjustable relative tosaid arm by means of an adjusting screw 59 mounted in the upper end ofthe section 53 as clearly illustrated in Figures 2 and 3 of thedrawings. Thearm 51 is equipped with a stop in El] for limiting themovement of the dog when the arm 5! is in raised position as illustratedin Figure 3.

Mounted on the inner end of the shaft 4| adjacent the arm 43 is a disk6| formed with a cam section 62 and which provides a locking face 63 forengagement with one end of a lever 55 pivoted to the housing 5 as at 65.The opposite end of said lever is adapted for actuating engagement witha laterally extending section 66 of a vertically extending arm 51, thelower end of which is secured to the bar 52.

Mounted on the shaft of the motor "I is a disk 68 for frictionalengagement with the peripheral face of the disk 35 for effecting initialoperation of the reset mechanism.

In operation, the parts being in the position illustrated in Figure 2,the handle 42 is manually operated to impart counterclockwise movementto the shaft 4|. Upon rotation of the shaft 4| the 'arm 43 will beoperated to actuate the switch 31 thereby starting the motor I and pump8. Upon starting of the motor the disk 68 rotates causing disk in turnto rotate and thereby raise the yoke arm 32 through the medium of thecrank arm 29 and connecting rod 3!. Raising of the yoke arm 32 effects araising of the bar 52 and positions the dog 53 in engagement with theratchet gear 22 as illustrated in Figure 3. As the bar 52 is raised theprojection 54 thereon engages the inclined face 4'! of the latch bolt 46to permit the projection 54 to seat upon the upper face of the latchbolt 45 as illustrated in Figure 3. During the upward movement of thebar 52 the laterally extending section 56 is likewise moved upwardly topermit the lever to be pivoted and rest upon the peripheral face of thedisk 6|, the face 63 being disposed under said lever. In this positionof the parts the free end 33a of the yoke arm 32 rests upon the upperface of the bumper 35, said bumper being in extended position due to therelease of the pressure of the bar 52 therefrom. In this position the.yoke arm is disposed Below said lower guide in such a manner that thedisk 30 is disengaged from the disk 68 and maintained therefrom by thetension exerted by the spring 21.

From the foregoing it will be apparent that when the parts are in theposition as above described gasoline or other fuel may be dispensedthrough the hose connection I! and the amount dispensed together withthe price thereof is indicated by the indicia on the indicia wheels I4in the usual manner. Upon a predetermined amount of fuel being dispensedthe same is cut off at the hose connection through the nozzle mechanismcarried thereby in the usual manner and said nozzle mechanism placed innon-operating position on the support carried by the housing. In thisposition the indicia wheels 14 still indicate the quantity and price ofthe fuel dispensed and the motor and pump are still in operation, thefuel being by-passed to the fuel reservoir in the usual manner. To resetthe calculating mechanism and actuate the switch 37 for stopping themotor and pump, the handle 42 is moved to impart rotation to the shaft4! in a clockwise direction and thereby rotate the disk to permit theend of the lever to seat against the face 33. This movement of the shaft4! also actuates the arm 43 in a manner to move the switch arm 3'! tobreak the electrical connection in the circuit to the motor and at thesame time actuate the bell crank lever 45 through the medium of the link44 to move the latch bolt 45 towards the rod and release the projection54. Release of the projection 54 from the upper face of the latch boltcauses the bar 52 to be projected downwardly by the action of the spring55 thereby positioning the end of the bar 52 in engagement with the freeend 33a of the yoke arm 32 and effecting compression of the bumper 34and engagement of the disk 30 with the disk 62 The downward movement ofthe bar 52 also imparts movement to the arm 5'! pivoted thereto andwhich in turn effects rotation of the gear 22 through the medium of thedog 58. Rotation of the gear 22 likewise rotates gear !9 through themedium of the shaft 2! and gear 25 and thereby resets the calculatingmechanism through the medium of the shaft E8. The ratio of the gear 28relative to the gear i9 is such as to cause the shaft l8 to be actuatedin a manner to position the indicia wheels l4 slightly past resetposition.

However, said calculating mechanism is equipped with a spring (notshown) which in. turn reverses the movement of the shaft !8 andpositions the indicia wheels in reset position. When the bar 52 has beenprojected downward by the spring 55, the laterally extending section 62of the arm 51 engages the end of the lever 64 and maintains the oppositeend thereof out of engagement with the face 63 to permit rotation of theshaft 44 to 6 effect another pumping operation as heretofore described.

What I claim is:

1. The combination of a fuel dispensing pump assembly of that classprovided with a housing in which is located a calculating mechanism forindicating the quantity of fuel dispensed, a pump for dispensing saidfuel, an electric motor equipped with an armature shaft for operatingthe pump, a switch operable for controlling the electric circuit to saidmotor, and reset shaft for resetting said calculating mechanism; and ofa reset device comprising a bar slidably mount- .ed in said housing andprovided with a pivoted end section, a drive shaft mounted in saidhousingand geared to said reset shaft, a ratchet gear mounted on saiddrive shaft for operating the latter and said reset shaft, a connectingmember pivoted to said drive shaft and said section whereby to maintainsaid section spaced from said gear, a gravity actuated dog pivoted onsaid member for operating said gear to reset said calculating mechanism,a manually operable shaft extending into said housing, an arm mounted onsaid last mentioned shaft and connected to said switch, a bell crankmounted in said housing and connected to said last mentioned arm, aspring pressed latch bolt operable by said bell crank for releasing saidbar to actuate said reset shaft, and a drive mechanism connected to saidarmature shaft and engageable by said bar whereby said bar is actuatedto a position for operating said reset shaft upon movement of saidmanually operable shaft to operate said switch.

2. The combination of a fuel dispensing pump assembly of that classprovided with a housing in which is located a calculating mechanism forindicating the quantity of fuel dispensed, a pump for dispensing saidfuel, an electric motor equipped with an armature shaft for operatingthe pump, a switch operable for controlling the electric circuit to saidmotor, and a reset shaft for resetting said calculating mechanism; andof a reset device comprising a bar slidably mounted in said housing andprovided with a pivoted end section, a drive shaft mounted in saidhousing and geared to said reset shaft, a ratchet gear mounted on saiddrive shaft for operating the latter and said reset shaft, a connectingmemberpivoted to said drive shaft and said section whereby to maintainsaid section spaced from said gear, a gravity actuated dog pivoted onsaid member for operating said gear to reset said calcu latlngmechanism, a manually operable shaft extending into said housing, an armmounted on said last mentioned shaft and connected to said switch, abell crank mounted in said housing and connected to said last mentionedarm, a spring pressed latch bolt operable by said bell crank forreleasing said bar to actuate said reset shaft, a drive mechanismconnected to said armature shaft and engageable by said bar whereby saidbar is actuated to a position for operating said reset shaft uponmovement or" said manually operable shaft to operate said switch, alocking lever pivotally mounted in said housing and actuated by saidbar, and a cam fixed on said manually operable shaft and engageable bysaid lever to preclude actuation of said switch to close said circuit tosaid motor in advance of the actuation of said reset shaft by said bar.

GLENN J. WILLIAMS.

